Question

решить уравнение 3/10*(2x+3 9/10)=1 4/5:1 7/53

Answer 1

3/10*(2х+3.9/10)=1.4/5:1.7/53
3/10*2х+3/10*9/10=9/4:60/53

3/5х+1.17/100=1.59/100

3/5х=1.59/100-1.17/100

3/5х=42/100=21/50

х=21/50:3/5

х=21/50*5/3

х=7/10

проверяем

3/10*(2*7/10+3.9/10)=1.4/5:1.7/53

1.59/100=1.59/100